A body of mass 5 kg initially at rest is subject to a force of 20 N. What is the kinetic energy acquired by the body at the end of 10s ?
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F=ma
a=20/5
a=4m/s^2
K. E=1/2mv^2 ( v=at)
=1/2m(at) ^2
=1600×5/2
=4000
a=20/5
a=4m/s^2
K. E=1/2mv^2 ( v=at)
=1/2m(at) ^2
=1600×5/2
=4000
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